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The most effective way to reduce energy consumption is to insulate buildings. The Building Decree is becoming ever stricter for new builds, which means it is no longer sufficient to just use insulation materials. Insulation must be placed in a manner that allows it to retain its efficacy for a long period of time. It is thus essential for moisture-regulating and airtight membranes to be placed on both sides of the insulation.
Durable and efficient
Meuwissen Gerritsen’s range contains a wide variety of membranes that are placed on the warm side of the insulation. Vapour control or moisture-tight membranes prevent hot air from leaving buildings via the insulation. In addition, the membranes ensure sufficient resistance against vapour pressure. This vapour pressure can lead to a vapour pressure deficit between the indoor and outdoor air, which Mother Nature will try to rectify. Without construction membranes, the moisture would pass freely through the insulation and condense at its dew point, whereby the construction would rot and mould would form.
If constructions do not have an airtight finish, hot air is able to escape through cracks in the construction or through connecting joints. This must be prevented because extra energy will be needed to heat the air and such losses, in effect, equate to energy loss. Another negative effect is the risk of condensation when this air stream cools and becomes condensation as it exits.
Therefore, instead of placing insulation material, it is perhaps more important to properly install and fully seal the concerned construction. This can be done by applying Miofol® or TAFTEX® vapour control and vapour barrier membranes on the warm side of the insulation, and by sealing overlaps, staples or tears using VAST-R® or TAFTEX tape.
When installing a moisture barrier, we recommend applying the membrane using our VAST-R® dubbelzijdig tape or VAST-R® Sealpro. This means the membrane will be applied directly to the surface, and will not be damaged by staples or other means of attachment. It is also crucial to make openings in the membrane airtight, like those for flue gas outlets and ventilation ducts, because these areas are particularly susceptible to energy loss and condensation. Tyvek® Flexwrap is a flexible and extremely adhesive finishing tape, which can be easily and quickly wrapped around irregular edges.
If membranes are placed using battens (in order to create a cavity for electricity wires or to protect the membrane by placing it deeper into the construction), we advise applying VAST-R® Butyl tape under the batten. This will prevent screws or nails, with which the battens are fixed in place, creating openings in the underlying membrane. VAST-R® Butyl tape helps to fully seal the membrane around screw holes and thereby ensures an airtight and moisture-tight connection.
Looking for the best way to ensure airtight insulation for your project? Feel free to contact us for appropriate advice.
Alkreflex® 2L-2 is a two-layered composite air-cushion membrane, which is finished with a layer of coated pure aluminium on both sides.
TAFTEX® IN-100 is a moisture-repellent, watertight membrane, which consists of two layers of polypropylene.
Miofol® VS 2 is a 3-layer floor membrane, which contains 3 mm of PE foam and a blue HDPE top layer.
Miofol® Active is a moisture-variable membrane, which is made from non-woven polypropylene and a polyethylene-copolymer film.
Miofol® 100S is a 3-layer moisture-repellent COEX membrane that possesses exceptional protective properties.
Tyvek® AirGuard® Smart is an airtight variable vapor barrier, which consists of HDPE Tyvek® and features a polymer coating.
Miofol® AVS 4 is a 6-layer laminated membrane that features a membrane flap and integrated adhesive strip.
Miofol® 125AV is a pure aluminium vapour barrier membrane that features an LPDE coating.
Alkreflex® 2.5 is a multi-layered insulating membrane, which is ideal for use on walls and roofs.
VAST-R® Non-woven tape is a one-sided adhesive tape that is made from non-woven polypropylene and features a VAST-R® high performance adhesive layer.
VAST-R® Nail sealing tape is a one-sided self-adhesive PE foam tape for creating a waterproof seal around (counter) battens used to fix roof membranes in place.
VAST-R® Membrane tape basic is a single-sided tape for making overlaps wind- and waterproof and to repair potential damage.
VAST-R® Facade tape features a facade membrane top layer, polyacrylate-based dispersion adhesive and a siliconized paper liner.
VAST-R® Double-sided tape is an extremely adhesive two-sided tape to give membranes an airtight finish and to make overlaps air- and windproof.
VAST-R® Butyl tape is a double-sided adhesive sealing tape that is used to stick membranes and films to various surfaces.
VAST-R® Aluminium tape basic is a single-sided adhesive tape for making overlaps wind-, air-, water- and moisture-proof and for repairing potential damage.
Tyvek® tape is a one-sided HDPE tape that features a thick layer of water-based acrylic adhesive and a siliconized paper liner.
Tyvek® FlexWrap tape is a flexible tape for making openings in roofs, ceilings and walls air- and waterproof.
Tyvek® Facade tape features a modified water-based acrylic adhesive and a siliconized paper liner.
TAFTEX® Membrane tape is a single-sided tape for making overlaps wind- and waterproof and for repairing potential damage.
TAFTEX® Facade tape features a modified water-based acrylic adhesive and a siliconized paper liner.
TAFTEX® Alu tape is a single-sided adhesive tape for making overlaps wind-, air-, water- and moisture-proof and for repairing potential damage.
Miofol® 150A is a reflective aluminium vapour barrier membrane that has been reinforced using polypropylene webbing.